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Re: [SANET-MG] no smoking cow? reply
Hi Brian,
The paper below from UK shows that E coli 0157 (shiga toxin or stx for
the Ecoli and its bacteria phage or bacterial virus) is found on
pasture grasses but less on silage and processed foods.I have also
found a lot of reports on spread of E coli 0157 by birds, flies and
slugs. I have not put down those abstracts for sake of space but it
seems flies may be a major source for spreading the toxic bacteria. It
seems almost as if nature had generally begun to rebel against the human
predator and joined forces to deal with the threat. Organic agriculture
like conventional agriculture is a victim not a cause.It seems clear
that USDA and other research establishments have been slow to recognize
the growing threat to humans and must be prodded into action.
Lett Appl Microbiol. 2006 Aug;43(2):205-10.
Shiga toxin-producing Escherichia coli, faecal coliforms and coliphage
in animal feeds.Hutchison ML, Thomas DJ, Walters LD, Avery SM.
Research Division, DLS-Eurofins, Wolverhampton, UK.
mike.hutchison@directlaboratories.net
AIMS: Animal feeds (n = 226), collected from pastures or feeding troughs
on UK farms and from feed manufacturers' bulk stores, were analysed for
Escherichia coli harbouring shiga-toxin genes (stx), faecal coliforms,
coliphages and stx-harbouring bacteriophages. METHODS AND RESULTS:
Samples comprised of 79 fresh grasses, 26 silages and 121 dried or
heat-processed feeds (DPF). Five of the 79 (6.3%) fresh grass samples
contained stx(2)-E. coli. stx-E. coli were not detected in the silages
or DPF that were examined. Faecal coliforms were detected in 75/79
(94.9%) of fresh grasses, 19/26 (73.1%) of silages and 36/121 (29.8%) of
processed feeds. Coliphages were detected in 63/79 (79.7%) and 18/26
(69.2%) of fresh grasses and silages, respectively. Coliphages were
isolated at a significantly lower prevalence of 5% (6/121) from
processed feeds. Although stx(2)-phage was isolated from the enrichment
of a single grass sample, stx-phages were not detected in any of the
silage or processed feeds. We did not detect stx(1)-phage in any of the
samples collected. CONCLUSIONS: Pastures have the potential to act as
transmission vectors for stx-harbouring E. coli for grazed livestock.
SIGNIFICANCE AND IMPACT OF THE STUDY: This is the first study to report
on the prevalence of E. coli harbouring stx genes, faecal coliforms,
coliphages and stx-harbouring bacteriophages in a range of feedstuffs
destined for consumption by UK livestock. This study provides
information on the risk of feeds to the spread of stx-phages between
livestock and/or the environment
sincerely, joe cummins
Brian Baker wrote:
Jeff,
In a word, no.
While E. coli is in every cow [and in all of us] the pathogenic
strains are limited. The O157:H7 strain is antibiotic resistant and is
favored in selection by acidic conditions. Cows that are fed
relatively high levels of concentrates and are treated with
antibiotics are more likely to become infected with that particular
strain than cows on pasture not treated with antibiotics.
Suggest you look at the following report prepared by Chuck Benbrook on
the Organic Center's website.
http://www.organic-center.org/science.latest.php?action=view&report_id=62
<http://www.organic-center.org/science.latest.php?action=view&report_id=62>
Brian Baker, Research Director, OMRI
Jeff Schahczenski wrote:
Is E coli 0157 in every cow not matter how it is raised? This seems
to be the implication?
sals wrote:
Lawrence u must not have heard of the new think tank idea against
natural farming call "get the shit out of natural farming.
"}. u have not seen anything yet. I always thought a cow was one
perfect creation eating grass and weeds and turning it into milk
beef and pure gold manure. I don't use it now because of all the
pressure I see the government will put on natural farming . I can
see by the talk going around that manure may be out for me. darn I
always thought ally farming was a wise way to farm . Talk about
sustainable ag. I seen it once and thought the farmer was one of
the smartest farmers I knew . Ally farming is where u plant fruit
trees leave space for grazing then more trees. let the cows graze
in-between the trees , taking time for feed to grow then something
else then foodstuff or crop etc. I don't know the rotation or
timing but I always thought what a sustainable way to farm. the
cows grazes and poops and walks around then the cows are moved to
another ally where feed grasses etc are grown . old ally rest or
something then after right time crop planted then plant what cows
eat then let the cows back in again. the whole idea seem
sustainable to me. guess this kills that idea. I don't use manure
or compost tea anymore because the government USDA organic certifier
etc give u so much manure for using it . If u are doing compost tea
I would not use manure in it and compost with no manure but if u
are certified u have to know what's in it . in my mind comport tea
and manure and even compost are the best tools we have but
government persecution is too much to bear. I don't know how they
are going to put life back into their burned out dead soil with out
those tools. I can see feed lot manure being bad but what u had
delivered and what your going to do with it sounds right to me.
Ori inal Message ----- From: "Lawrence F. London, Jr."
<lfl@INTREX.NET>
To: <SANET-MG@LISTS.IFAS.UFL.EDU>
Sent: Monday, October 23, 2006 9:33 PM
Subject: Re: no smoking cow?
jcummins wrote:
There seems to be a real effort to stop trying to pin the spinach
outbreak on organic food. However, it is clear that organic
farmers will have to steer clear of cows! >
I just had 8 - 8 cu.yd. dumptruck loads of cow straw manure
delivered for storage, weed removal, and future use.
This is manure from a large pasture where the owner has put
successive round hay bales under trees for his beef cattle to eat
year round. The cows eat nothing but grass, weeds and hay, never
any grain and deposit large quantities of manure
on the hay from the round bales that gets spread over the ground in
the area. As far as offsite N/biomass-compost sources is concerned,
this is as good as it gets, lots of clean N, biologically active,
already mixed with biomass for carbon, a single source of nitrogen
and humus, good stimulus for years of food and cover crop
production and soil improvement. I assume there will be no E coli
0157 in this manure unless it comes from some source other than his
cows.
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For more information on grants and other resources available through the SARE program, please visit http://www.sare.org.